Controlling the micro/nano structure of self-cleaning polymer coating

被引：43

作者：

Kang, Xu ^{[1
]}

Zi, Wei-Wei ^{[1
]}

Xu, Zhu-Guo ^{[1
]}

Zhang, Hao-Li ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 22期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

crystallization; superhydrophobic; polyethylene; self-cleaning;

D O I：

10.1016/j.apsusc.2007.04.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Polypropylene bio-mimic self-cleaning surfaces with porous micro-nano-binary morphology structures were prepared by a simple casting method. The influence of the cooling process and solvent composition on water contact angle, sliding angles and self-cleaning properties has been investigated. Detailed SEM morphology studies revealed that the polymer used in this work is commercial-grade granular low-density polyethylene (LDPE) forms petal-like crystalline, which are of micrometer scale in length and nanometer scale in thickness. The nanocrystallines on the surface represent a porous three-dimensional micro-nano-binary structure. It was found that a compromise to the film porosity and crystal nano structure is essential for achieving a satisfied self-cleaning surface. Under optimum condition, a water contact angle of 152.2 degrees, and a sliding angle of 1.7 degrees can be obtained using this simple method. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：8830 / 8834

页数：5

共 17 条

[1]

Hydrophobicity, adhesion, and friction properties of nanopatterned polymers and scale dependence for micro- and nanoelectromechanical systems [J].